I petehs



3 Sheets- Sheet 1.

A. GAVALLI.

NAILING MACHINE FOR BOOTS 0R SHOES.

(No Model.)

No. 340,556; Patented Apr. 27,1886.

' INVENTOR BY I 7 ATTORNEY N. PETERS. PhckmLiIhograpl-ur, Wnhinglon. u. c.

(No Model.) 7 Sheets-Sheet 2. A.. OAVALLI.

NAILING MACHINE FOR BOOTS 0R SHOES.

No. 340,556. PatentedApr. 27', 1886.

M111E55E5: Imlenfm'.

N. PETERS PholwLllllcgmpher, Waslllflgfnm n. c.

(No Model.) 3 Sh eetsSheet 3. A. GAVALLI.

NAILING MACHINE FOR BOOTS OR SHOES.

Patented Apr. 27

Tins Phoin-lilhngmpv Uiviien STATES PATENT OFFICE.

MAILING-MACHINE FOR BOOTS OR SHOES.

Application filed August 20, 1884. Serial No. 141,505.

To all 207107, it may OOH/067":

Be it known that I, ANDREA CAVALTJ, a citizen of the United States, residing in the city and county of San Francisco, State ofGali fornia, have invented an Improved Machine for Forming and Inserting Fastenings into the Soles of Boots and Shoes; and I do hereby deelare that the following is a full, clear, and exact description of my said invention, reference being had to figures and letters on the drawings that accompany and form part of this specification.

In this improved machine are contained and employed similar mechanisms and devices, and in several respects the same features to be found in a machine for forming and inserting cable-wire fastenings heretofore constructed by 1ne,and made the subject of an application for patent, Serial No. 105,855that is to say, I employ the same Wire-feedi ng and screwforming mechanisms, by which the wire is drawn from a reel and is forced with a, rotating motion through a set of stationary cutting and finishing dies to form the spiral thread; also the same force-feed mechanism to force the threaded wire into the sole, and which acts in such manner, or is so driven by or from the wire-rotating 1necl1anism,as to drive the wire with a rate of movement proportionate to its rotation and the pitch of the screwthread; and as the result of this movement the wireis driven into the sole in the same manner as a screw is forced into wood, and the fastening is caused to engage with and become properly embedded without destroying or breaking the groove or thread produced by it in the surrounding substances of the work. My former machine, however, was constructed more especially for heavy manufacturing purposes, and is arranged to form and drive two fastenings at the same time, while this machine, hcrein described and forming the sub ject of the present application,is designed for light shop-work, and for repairing purposes and other situations where a light simple machine is required. It is constructed to form and drive a single fastening at each opera tion, and is arranged to work upright or in a vertical position.

' The novel points and features in the single machine include certain novel stop 1nechanism for throwing the wire-feed out of action after each fastening is driven, and,as the wire- (No model.) I

cuttingand work-feeding devices are operated to sever the driven fastening and then feed the work forward for the next fastening, it also includes certain novel construction of feed and wirecutting mechanisms, a w0rksupporting horn operated by a treadle to hold and present the work, and an indicating device connccted to and operated from the worksupport,to show what lengthof fastening is required for any thickness of material placed in the machine, and what change or adjustment is required in the wire-feed mechanism to produce such length of fastening, and as quickly as the work is placed in the horn and raised up by it to the wire-driving mechanism.

Figure l is a side elevation of my improved machine. the stand, and work supporting horn. Fig. 2 is a front elevation of the head of the machine, showing the pulley for preventing reverse motion. It will be understood, however, that this pulley is intended to be used in lieu of as w ll as in addition to the hand-wheel, and is here shown to indicate its relation to the other parts of the machine. Fig. 3 is a side elevation in section and on a larger scale, showing the frame and some of the parts, more particularly the \vire cutting and work-feeding device and the stop mechanism, in section. Fig. -:L is a detail view of the wirecutting device and its parts. Fig. 5 shows the feed-wheel and details of the mechanism. Fig. 6 shows the principal wheel on the stop mechanism. Figs. 7 and 8 are details of parts for changing the feed of the wire and for throwing it into and out of action. 9 and 10 show the wire-driving spindle and connected mechanism in detail. Fig. 11 gives the details of the feed-regulating mechanism by which the distance of the line of fastenings from the edge of the work is changed and set as required. Fig. 12 shows the form of a clutclrpulley that is employed to prevent the machine from being turned backward aecidentally.

The frame or bed-plate A is attached to the stand A by a hinge, a at the back, and when in working position it is held by the brace A, secured upon pin or bolt (0 in stand A, to stand upright. The brace is connected to the stand by ahinge-joint at a", and is fastened to the back of the bed-plate by a screw, (0. This manner of setting and fixing the machine permits it to be turned back for access to the ICO mechanism by simply loosening the brace and tilting the frame back. In the frame are bearings a for an upright tubular shaft, d, carrying a pinion, H, driven with continuous rotation from the short shaft, and also a beltpulley, when power is to be employed, on which is the hand-wheel B, the connection of the two shafts being made through the bevel gear E, the intermediate gear, E, and the bevel-pinion D fast on the tubular shaft. The shaft d drives the whirling frame D and gives rotating movement to the wire cable on the reel D, which is held by frame D. It also operates the feed-rolls by which the wire is forced into the work. The operation of these parts and the means whereby they are driven are already set forth in my former application, and these devices are substantially the same in their action and result. The driving mechanism is shown, however, in detail in Fig. 3 of these drawings. The spindleFpasses through the tubular shaft and carries the head 0 on its lower end. The upper end terminates in the bobbin frame or reel D, in which is placed the bobbin D. The spindle is hollow, and this passage extends through the head, wherein it is intersected by the chamber d", in which are set the feed-rolls G. The form of these feed-rolls is shown in Fig. 10, and their position in the head in Fig. 9. They have toothed edges 9, as clearly shown in Fig. 10, by which one is driven from the other, and they are also grooved in the center of the rim at g, totake the wire. This wire-groove is threaded to conform to and engage the spiral of the wire. The spindle g of one roll carries a spur-wheel, O, that engages with a worm, G", on shaft 0. The bearings of this shaft 0 are at d d", on the side of the head 0, and on its upper end is a pinion, 0 that engages with a stationary gear, 0, fixed to the part a" of the frame and having the spindle running through it. Rotation of the spindle therefore produces rotary motion of the feed-rolls. The spindle is driven from the shaft (1 through the pinion I on the shaft, and the crown-wheel J, that is a part of the collar J, on the spindle. This collar is keyed to but is free to slide on the spindle, so that the crown-wheel can be raised to stop the rotation of the spindle, and also brought down into gear with the pinion to throw the wiredriving mechanism into action again. This intermittent action is produced by the operation of an automatic stop mechanism so connected with the work-feeding and wire cutting devices that the revolving spindle is thrown out of gear, and the feed of the wire through the threading-dies into the work is arrested at the end of a certain length of rotation of the wire. At this time the length of Wire required for the fastening is given, and the eutting-off device is caused to act, the fastening has been'driven into the work, and the feed-wheel is brought into action to advance the work a sufficient distance to space it for the next fastening. To vary this length of movement, the work-feeding and wire cutting devices are caused to act sooner or later by means of a set of conegears, h h h, 850., with any one of which the pinion H of the spindle H can be brought into gear by moving the pinion along the tubular shaft (1. The pinion is part of a sliding collar, h that is moved and set by a slide, it, provided with an arm, 76, to take into the groove on the collar. The slide is moved and set on the upright rod L by means of a pinion fixed on a short shaft, with a milled head, on, and a rack, m on the side of the rod. The cone of gears is fixed on the spindle H,.set in bearings with an inclination from the vertical to bring those faces of the gears h h h, &c., on the side next to the pinion into a vertical line, so that by moving this pin ion upon its shaft it can be thrown into gear with any one of the cone of gears. The time of action of the cutting-off and work-feeding devices with respect to the length of movement of wire-feeding mechanism is thus regulated by shifting the pinion from one gear it h h, &c., to another.

Upon the side of the rod or guide L is a scale of divisions, L", that shows what gear of the set h h, &c, the pinion H should gear with to produce a given length of fastening, and the divisions of the scale are made to correspond with the divisions on the scale or dial D whereon the indicator D works, so that as the latter scale shows what thickness of sole is interposed between the point of the horn and the wire-feeding head above, the number recorded will show what number is to be taken on the other scale, L, in setting the pinion. The inclincd spindle is geared into a hub or collar, M, that carries and forms the axis of two cams, N P, of which one, N, gives motion to the wire-cutting device, while the other, P, operates the work-feed; and this connection of spindle to cams is made by the gear Q on the end of the spindle, the gear R and pinion R, fast together, and having bearings r in the frame, and the gear S, that is a part of the hub M.

The construction of the cutting device is shownin Figs. 3and 4. The fixed frame T has guides for a sliding yoke, T, that receives reciprocating movement from the joint action of the cam N and a spring n. The end of this yoke carries a bar or extension, T, to which is fixed a cutter, T, with a beveled edge, and at the front of the frame, in a slot that also takes and guides the bar T", is a fixed cutter, T, with abeveled edge, this cutter being fixed by the pin t.

The feedwvheel is mounted on aslide composed of two plates, which allow adjustment to change the position of the feed wheel.

The frame XV fits into a recess within the bed or machine-frame, and in it is fixed those parts of the feed-actuating mechanism which are directly connected with the feed-wheel, so that by drawing out this frame W the parts are readily accessible for cleaning and repair ing. This frame being stationary in the machine, it is necessary to provide some means of adjusting and setting the edge of the feedwheel in or out with respect to the line of the wire, where it issues from the aperturein the block 'D", so that the distance of the row of fastenings from the edge of the sole can be regulated, for as the edge of the sole is set against the feed-wheel and turns in contact with it during work the fastenings will be driven at whatever distance the periphery of the feed-wheel is set back of the tubular opening in the head, through which the wire is forced into the sole. The frame T rests directly upon the frame \V, and fits into the slot in the bed, from which it can be withdrawn at the same time with such other frame. The frames 'W and T are shown clcarl y in the detail view of Fig. 11., and this position in the frame is shown in Fig.

Theplates W \V have bearings for the feedwhee1\V*, and one is placed upon and the other under and against the front faces of the frame \V, and the two plates are fastened together by the block V, the n pper end of which projects through a slot, f, in the frame T of the cnttingoff device. By means of a slidebar connected to this projection and operated the lever between handle and fulcrum This plate is slotted, and a screw on the block f projects through the slot to receive a bind ing-nut,f, so that by tightening up the nut this slide-plate f will be clamped and held stationary. The slide-plate is a part of a bar, f that sets into and is movable in a slot in the machineframe, as seen on the right-hand side of Fig.- 2, and at the inner end it terminates in a foot or extension, f, in which is a slot to take the end of the block XV. These parts are shown in detail in Figs. 8 and 11, where it will be seen that by moving the lever F to one side or the other the feed-wheel can be moved and set to any required position. Intermittent rotation of the feed-wheel is produced by the rack-bar \V,that engages with a toothed segment, X and by its reciprocation gives a back-and-forth motion to it. Connection between this segment and the feed-wheel is then made by some suitable clutch device, as a pawl and ratchet, and the rack-bar is moved with the required reciprocating movements by the joint action of the cam P and the spring p p. This toothed disk and the feedwheel are set over each other and the connection made by means of a number of notches or depressions, c, in the face of the wheel, arranged eoncentrically around the pivot, and a projecting tooth or pawl, 12, on the face of the toothed disk, held out by a spring and set to run and take into the circle of notches in the feed-wheel. These depressions have slanting bottoms, with vertical shoulders similar to ratchet-teeth in shape, so that the spring-tooth in running into them takes hold like a pawl, dropping into a notch on the backward movement ofthe disk,and engaging with thestraight shoulder on the reverse movement; The constrnction is substantially that of the pawl and ratchet. The springs 11 p are held on guidepins fixed in the rack-bar \V', that is itself a slide working in grooves in the frame V. The cams are suitably shaped to produce movements of the cutter and feed-actuating bars at one point in each revolution, and to be out of action for the remainder of the revolution.

The stop mechanism by which the spindle is arrested while the wire-cuttin g and feed of the work takes place and is thrown into op eration again after each time of feed is shown in Figs. 3, G, 7, and 8. The collar J is con nected with the outer end of a lever, K, that has a fulcrum, It, on the frame, and the lifting-rod 1i, attached at the upper end to the lever, between the collar and fulcrum, runs through the spindle 1-[ down to the lower end, where it rests upon the head of ashort pin, 1). The hub M of the geai'nlieel has a bore or hollow center, with a eanrgroove, m ofsuch shape that the rotation of the part will produce an intermittent rising-and-lalling movement of the pin which sets into this here, and has a projection on the side to take into this groove. in the revolutions of the gearthis pin therefore lifts the rod and holds the collar up from the pinion for a given time, during which the feed of the work takes place, and at the end of this movement the gears are allowed to engage with each other by the descent of the pin again. Thus the feed of the wire is antomatically arrested while the forward movement of the work takes place, and as the work is moved and spaced for the next fastening the driving mechanism is brought into action again. A means for throwing out the gears by hand is also provided, by which the feed of the wire can be arrested by the operatorat any time during work. This hand mechanism is shown in Figs. 7and 8, where the hollow spindle has a loose collar, Y, to which the lifting-rod is attached by screws y, that take through a slot, 71 in the spindle, so that by sliding the collar up or down the rod will move accordingly. Upon the top of the collar a coilspring, Z, gives a downward pressure, and the end of a short crankshaft, Y", set under the collar, has a handle, y upon the outside, and at the side of the frame is set in position to raise the collar. This vertical movement acts'upon the lifting-rod to throw the two gears out of contact.

The worksupporting horn A is fixed at the lower end to a slide, a", that is movable up and downin agroovein the front of the stand A. A lever, A, working on a pivot, a, projects through a slot, a, in this frame, so that the front end bears against the under side of the slide a", while its rear end running back is connected by a rod, A, to a treadie,

A. Connection of the lever A is made with the pointer D attached to the side of the machine-bed by means of a rod, A, that causes the pointer to vibrate simultaneously with the movement of the lever A. Depression of the treadle A therefore raises the work-support A, and at the same time indicates by means of the pointer D and the scale D the amount of this movement. The relative lengths of these levers and the divisions of the scale are so regulated that in such movement the dis tance of the point of the horn from the bottom face is shown on the scale. When the work is placed on the horn and the treadle pressed down, the bottom of the sole is brought up against the head, and the distance between the point of the horn and the face of the head will be the thickness of the sole. This thickness will therefore be read from the scale D and the length of the feed of the wire will be adjusted accordingly by changing the pinion H from one gear h h, 850., to the other. This adjustment is facilitated by means of the scale L on the bar.

When desirable, a pulley to be driven by a belt from a suitable power may be substituted for the hand-wheel B.

A pulley is shown in Fig. 10 in connection with the shaft and support A*.

To prevent reverse motion I employ a friction clutch, drum, or pulley, X, applied as shown in Fig. 12. It is in two parts, of which one, x, is fixed to the bracket and is stationary,while the other is a drum or ring running loosely upon the flange of the other. The part a; carries a number of dogs, a" as, having inclined slots to engage the flange of the part, so that they are free to slide. As the part moves in one direction they will bite and grip the ring. This causes the driving-belt to slip and prevents backward motion. This construction of friction-clutch is substantially that of the well-known forms of such clutches.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination, in a suitable frame, of the upright tubular shaft (Z, the driving-shaft geared into it, the spindle F, geared into the tubular shaft, to receive rotation therefrom, having the bobbin-carrier D on the upper end and the head 0 on the lower end, the feedrolls G in the head, and mechanism whereby said rolls are rotated from the revolution of the spindle to advance and force the wire through a set of thread-forming dies, D held in the frame below a wirecutting device, and work-feeding device having intermittent movement and action alternating with the wire-driving mechanism and located below the said dies, and mechanism whereby the said devices receive intermittent movements from the revolving spindle, and are brought into action and thrown out automatically and alternately with the wire-feeding rolls, and a work-supporting horn, substantially as described.

2. In a machine for the purposes described, the combination of the Work-feeding and wirecutting devices and mechanism connecting them with or to the lifting-rod K, and acting to throw up the spindle-gear and arrest the movement of the spindle when the said devices are brought into action.

3. The combination of the continuouslyrevolving shaft a, the spindle F, geared thereto by the gears I J, the lever K, and liftingrod K, and mechanism, substantially as described, applied to and acting against the lower end of the lifting-rod and actuated from the continuously-revolving shaft to raise and hold up said rod at intervals in the rotation of the shaft to stop the spindle, and a spring to draw the rod down again.

4. The combination, with the upright shaft I, having the sliding pinion H, of the adjusting-slide to move and set the pinion, the inclined spindle H, having the set of cone-gears, the cams N P, the rotating hub M, geared into the spindle, the yoke T, having the cutterbar and cutter adapted to or against a fixed cutter, the slide WV, carrying the rack to actuate the feed-wheel, the springs n p, to hold the parts in working contact with their re spective cams, and the stop mechanism operated from the raised spindle through the system of gears, as described, to throw out the wire-driving mechanism as the cams begin to act, substantially as described.

5. In combination with the cam-shaft geared into the wire-driving mechanism through the gears Q R, and carrying cams by which the feeding and wire-cutting devices are actuated, the gears R S, hub M, with cam-groove m, the lifting-pin b, and the rod K, resting on the pin b .and connected by the clutch I J,'by which the wire-driving mechanism is coupled to the driving-shaft d.

6. The combination, with the frame IV, carrying the feed-wheel actuating mechanism, of the independently-sliding feed-wheel carrier \V stud ll, slotted slide-plate f, with slotted extension f to take the stud W", the clamp device f f to lock the plate, and the lever F", attached to the slide, and pivoted to the macliineframc to move the slide and set the feed-wheel, substantially as herein described.

7. The combination, with the hollow gear carrying spindle H and the rod K, of the collar Y, loose on the spindle and fixed to the red, the lifting device y Y", and the spring Z, substantially as herein described.

8. The combination of the slide a carrying the work-support A the lever A, bearing against the slide and so connected with the treadle A as to move the support as the treadle is depressed, and the pointer D", having movement over a scale, D and connected with the lever A, substantially as herein described, to operate as set forth.

ANDREA OAVALLI. lVitnesses:

ED\VARD E. OSBORN, JNo. L. TAGGARD.

KIO 

